package com.wemall.pay.alipay.util;

import java.io.UnsupportedEncodingException;
import org.apache.commons.codec.digest.DigestUtils;

public class MD5 {
    public static String sign(String text, String key, String input_charset){
        text = text + key;
        return DigestUtils.md5Hex(getContentBytes(text, input_charset));
    }

    public static boolean verify(String text, String sign, String key, String input_charset){
        text = text + key;
        String mysign = DigestUtils.md5Hex(getContentBytes(text, input_charset));

        return mysign.equals(sign);
    }

    private static byte[] getContentBytes(String content, String charset){
        if ((charset == null) || ("".equals(charset)))
            return content.getBytes();
        try {
            return content.getBytes(charset);
        } catch (UnsupportedEncodingException e){
        }
        throw new RuntimeException("MD5签名过程中出现错误,指定的编码集不对,您目前指定的编码集是:" + charset);
    }
}




